Methods and apparatus for improving NFC data exchange configuration parameter update mechanisms

ABSTRACT

Aspects disclosed herein relate to improving mechanisms for prompting a NFCC to update data exchange parameters for ISO-DEP communications between a DH and a remote NFC endpoint. In an example, with a NFC device a DH may be configured to receive an activation message from a NFCC that is using a Frame RF interface over NFC-B RF technology, determine that one or more data exchange parameters included in the activation message are different from one or more corresponding current relevant data exchange parameters that the NFCC is configured to implement, generate an RF parameter update command including the one or more data exchange parameters corresponding to the one or more current relevant data exchange parameters that are determined to be different, and send the generated RF parameter update command to the NFCC to prompt the NFCC to update the one or more corresponding current relevant data exchange parameters.

CLAIM OF PRIORITY UNDER 35 U.S.C. §119

The present Application for Patent claims priority to ProvisionalApplication No. 61/542,027 entitled “METHODS AND APPARATUS FOR IMPROVINGNFC DATA EXCHANGE CONFIGURATION PARAMETER UPDATE MECHANISMS” filed Sep.30, 2011,and assigned to the assignee hereof and hereby expresslyincorporated by reference herein.

BACKGROUND

The disclosed aspects relate generally to communications between devicesand specifically to methods and systems for improving mechanisms forprompting a Near Field Communication (NFC) controller (NFCC) to updatedata exchange parameters for international standards organization dataexchange protocol (ISO-DEP) communications between a device host (DH)and a remote NFC endpoint.

Advances in technology have resulted in smaller and more powerfulpersonal computing devices. For example, there currently exist a varietyof portable personal computing devices, including wireless computingdevices, such as portable wireless telephones, personal digitalassistants (PDAs) and paging devices that are each small, lightweight,and can be easily carried by users. More specifically, the portablewireless telephones, for example, further include cellular telephonesthat communicate voice and data packets over wireless networks. Manysuch cellular telephones are manufactured with ever increasing computingcapabilities, and as such, are becoming tantamount to small personalcomputers and hand-held PDAs. Further, such devices are enablingcommunications using a variety of frequencies and applicable coverageareas, such as cellular communications, wireless local area network(WLAN) communications, NFC, etc.

When NFC is implemented, a NFC enabled device may initially detect a NFCtag and/or target device. Thereafter, communications between NFC devicesmay use an ISO-DEP. The present draft of the NFC Forum ControllerInterface (NCI) specification does not address all functionalityrequired to use the ISO-DEP.

At present, NCI defines two RF Interfaces that a device may use whencommunicating using ISO-DEP RF Protocol: ISO-DEP and Frame. If the NFCController is relatively sophisticated, it may be able to handle theISO-DEP protocol, and ISO-DEP RF Interface may be used, reducing theprocessing load on the Device Host. If the NFC Controller is lesscapable and/or has a known bug, Frame RF Interface can be used. In suchan implementation, the NFC Controller merely passes protocol activation,data, and protocol deactivation messages on to the Device Host forprocessing. Currently, when activating ISO-DEP using Frame RF Interfaceover NFC-B RF Technology, there are parameters in the activation commandand response (ATTRIB command and ATTRIB response) that are needed by theNFC Controller, but since the NFC Controller merely passes on the datato the DH the specification does not provide a mechanism for the NFCC tolearn these values.

Thus, improved apparatus and methods for providing improved mechanismsfor updating data exchange parameters for ISO-DEP communication betweena DH and a remote NFC endpoint using interfaces such as a frame RFinterface and an ISO-DEP RF protocol may be desired.

SUMMARY

The following presents a summary of one or more aspects to provide abasic understanding of such aspects. This summary is not an extensiveoverview of all contemplated aspects, and is not intended to identifykey or critical elements of all aspects nor delineate the scope of anyor all aspects. Its purpose is to present some concepts of one or moreaspects form as a prelude to the more detailed description presentedlater.

Various aspects are described in connection with improving mechanismsfor prompting a NFCC to update data exchange parameters for ISO-DEPcommunications between a DH and a remote NFC endpoint. In an example,with a NFC device a DH may be configured to receive an activationmessage from a NFCC that is using a Frame RF interface over NFC-B RFtechnology, determine that one or more data exchange parameters includedin the activation message are different from one or more correspondingcurrent relevant data exchange parameters that the NFCC is configured toimplement, generate an RF parameter update command including the one ormore data exchange parameters corresponding to the one or more currentrelevant data exchange parameters that are determined to be different,and send the generated RF parameter update command to the NFCC to promptthe NFCC to update the one or more corresponding current relevant dataexchange parameters.

According to related aspects, a method improving mechanisms forprompting a NFCC to update data exchange parameters for ISO-DEPcommunications between a DH and a remote NFC endpoint. The method caninclude receiving, by a DH, an activation message from a NFCC that isusing a Frame RF interface over NFC-B RF technology. The method may alsoinclude determining that one or more data exchange parameters includedin the activation message are different from one or more correspondingcurrent relevant data exchange parameters that the NFCC is configured toimplement. Further, the method may include generating an RF parameterupdate command including the one or more data exchange parameterscorresponding to the one or more current relevant data exchangeparameters that are determined to be different. Moreover, the method caninclude sending the generated RF parameter update command to the NFCC toprompt the NFCC to update the one or more corresponding current relevantdata exchange parameters with the one or more data exchange parametersincluded in the RF parameter update command.

Another aspect relates to a communications apparatus. The communicationsapparatus can include means for receiving, by a DH, an activationmessage from a NFCC that is using a Frame RF interface over NFC-B RFtechnology. The communications apparatus can also include means fordetermining that one or more data exchange parameters included in theactivation message are different from one or more corresponding currentrelevant data exchange parameters that the NFCC is configured toimplement. Further, the communications apparatus can include means forgenerating an RF parameter update command including the one or more dataexchange parameters corresponding to the one or more current relevantdata exchange parameters that are determined to be different. Moreover,the communications apparatus can include means for sending the generatedRF parameter update command to the NFCC to prompt the NFCC to update theone or more corresponding current relevant data exchange parameters withthe one or more data exchange parameters included in the RF parameterupdate command.

Another aspect relates to a communications apparatus. The apparatus caninclude a DH configured to receive an activation message from a NFCCthat is using a Frame RF interface over NFC-B RF technology. The DH mayalso be configured to determine that one or more data exchangeparameters included in the activation message are different from one ormore corresponding current relevant data exchange parameters that theNFCC is configured to implement. Further, the DH may be configured togenerate an RF parameter update command including the one or more dataexchange parameters corresponding to the one or more current relevantdata exchange parameters that are determined to be different. Moreover,the DH may be configured to send the generated RF parameter updatecommand to the NFCC to prompt the NFCC to update the one or morecorresponding current relevant data exchange parameters with the one ormore data exchange parameters included in the RF parameter updatecommand.

Another aspect relates to a computer program product, which can have acomputer-readable medium comprising code for receiving, by a DH, anactivation message from a NFCC that is using a Frame RF interface overNFC-B RF technology. The computer-readable medium can also include codefor determining that one or more data exchange parameters included inthe activation message are different from one or more correspondingcurrent relevant data exchange parameters that the NFCC is configured toimplement. Further, the computer-readable medium can include code forgenerating an RF parameter update command including the one or more dataexchange parameters corresponding to the one or more current relevantdata exchange parameters that are determined to be different. Moreover,the computer-readable medium can include code for sending the generatedRF parameter update command to the NFCC to prompt the NFCC to update theone or more corresponding current relevant data exchange parameters withthe one or more data exchange parameters included in the RF parameterupdate command.

To the accomplishment of the foregoing and related ends, the one or moreaspects comprise features hereinafter fully described and particularlypointed out in the claims. The following description and the annexeddrawings set forth in detail certain illustrative features of the one ormore aspects. These features are indicative, however, of but a few ofthe various ways in which the principles of various aspects may beemployed, and this description is intended to include all such aspectsand their equivalents.

BRIEF DESCRIPTION OF THE DRAWINGS

The disclosed aspects will hereinafter be described in conjunction withthe appended drawings, provided to illustrate and not to limit thedisclosed aspects, wherein like designations denote like elements, andin which:

FIG. 1 is a block diagram of a wireless communication system accordingto an aspect;

FIG. 2 is a schematic diagram of a wireless communication systemaccording to an aspect;

FIG. 3 is a block diagram of a NFC environment according to an aspect;

FIG. 4 is a flowchart describing an example of updating parameters whenan ISO-DEP RF protocol is used with a frame RF interface with NFC-Btechnology, according to an aspect;

FIG. 5 is a call flow diagram describing an example of updatingparameters when an ISO-DEP RF protocol is used in listening mode with aframe RF interface with NFC-B technology. according to an aspect;

FIG. 6 is a call flow diagram describing an example of updatingparameters when an ISO-DEP RF protocol is used in polling mode with aframe RF interface with NFC-B technology according to an aspect;

FIG. 7 is a functional block diagram of an example architecture of acommunications device, according to an aspect; and

FIG. 8 a functional block diagram of an example communication system forupdating parameters when an ISO-DEP RF protocol is used with a frame RFinterface with NFC-B technology, according to an aspect.

DETAILED DESCRIPTION

Various aspects are now described with reference to the drawings. In thefollowing description, for purposes of explanation, numerous specificdetails are set forth to provide a thorough understanding of one or moreaspects. It should be understood, however, that such aspect(s) may bepracticed without these specific details.

As described herein, a device may recognize a NFC target device and/ortag when within range of the coverage area of the NFC device and/orreader/writer. Thereafter, the device may obtain sufficient informationto allow for communications to be established. One form ofcommunications that may be established is an ISO-DEP communication link.Communications between the devices may be enabled over a variety of NFCRF technologies, such as but not limited to, NFC-A, NFC-B, etc.

Generally, when activating ISO-DEP poll side over NFC-B using Frame RFInterface, a DH may select values for a number of data exchangecommunication parameters (e.g., Minimum TR0, Minimum TR1, Minimum TR2,Suppress SoS, and Suppress EoS). The DH may use some or all of thesevalues in an activation command which it sends to the Remote NFCEndpoint. Because some or all of these values may be needed by the localNFC Controller, the DH may then pack these values into an octet asdefine in Table 4 below in an RF_PARAMETER_UPDATE_CMD and send anRF_PARAMETER_UPDATE_CMD to the NFCC. The NFCC may then extract therelevant values and use them as appropriate for subsequent dataexchange.

Additionally, when activating ISO-DEP listen side over NFC-B using FrameRF Interface, a NFC Controller may pass an activation command itreceives from a remote NFC endpoint to a device host (DH). The DH mayinterpret the received activation command and, assuming it is valid, mayextract a number of values from the command (e.g., Minimum TR0, MinimumTR1, Minimum TR2, Suppress SoS, and Suppress EoS), or it may selectvalues for some or all of these variables. The DH may then pack thesevalues into an octet as define in Table 4 below in anRF_PARAMETER_UPDATE_CMD and send an RF_PARAMETER_UPDATE_CMD to the NFCC.The NFCC may then extract the values and use them as appropriate forsubsequent data exchange.

FIG. 1 illustrates a wireless communication system 100, in accordancewith various exemplary embodiments of the present invention. Input power102 is provided to a transmitter 104 for generating a radiated field 106for providing energy transfer. A receiver 108 couples to the radiatedfield 106 and generates an output power 110 for storing or consumptionby a device (not shown) coupled to the output power 110. Both thetransmitter 104 and the receiver 108 are separated by a distance 112. Inan exemplary embodiment, transmitter 104 and receiver 108 are configuredaccording to a mutual resonant relationship and when the resonantfrequency of receiver 108 and the resonant frequency of transmitter 104are very close, transmission losses between the transmitter 104 and thereceiver 108 are minimal when the receiver 108 is located in the“near-field” of the radiated field 106.

Transmitter 104 further includes a transmit antenna 114 for providing ameans for energy transmission. A receiver 108 includes a receive antenna118 as a means for energy reception. The transmit and receive antennasare sized according to applications and devices associated therewith. Asstated, an efficient energy transfer occurs by coupling a large portionof the energy in the near-field of the transmitting antenna to areceiving antenna rather than propagating most of the energy in anelectromagnetic wave to the far field. When in this near-field acoupling mode may be developed between the transmit antenna 114 and thereceive antenna 118. The area around the antennas 114 and 118 where thisnear-field coupling may occur is referred to herein as a coupling-moderegion.

FIG. 2 is a schematic diagram of an example near field wirelesscommunication system. The transmitter 204 includes an oscillator 222, apower amplifier 224 and a filter and matching circuit 226. Theoscillator is configured to generate a signal at a desired frequency,which may be adjusted in response to adjustment signal 223. Theoscillator signal may be amplified by the power amplifier 224 with anamplification amount responsive to control signal 225. The filter andmatching circuit 226 may be included to filter out harmonics or otherunwanted frequencies and match the impedance of the transmitter 204 tothe transmit antenna 214.

The receiver 208 may include a matching circuit 232 and a rectifier andswitching circuit 234 to generate a DC power output to charge a battery236 as shown in FIG. 2 or power a device coupled to the receiver (notshown). The matching circuit 232 may be included to match the impedanceof the receiver 208 to the receive antenna 218. The receiver 208 andtransmitter 204 may communicate on a separate communication channel 219(e.g., Bluetooth, Zigbee, cellular, etc.).

With reference to FIG. 3, a block diagram of a communication network 300according to an aspect is illustrated. Communication network 300 mayinclude communications device 310 which, through antenna 324, may be incommunication with a remote NFC endpoint 330 using one or more NFCtechnologies 326 (e.g., NFC-A, NFC-B, NFC-F, etc.). In an aspect, remoteNFC endpoint 330 may be operable to communicate using NFC module 332through various interfaces, such as frame RF interface 334 and ISO-DEPRF interface 336. In another aspect, communications device 310 andremote NFC endpoint 330 may establish an ISO-DEP communication linkusing an ISO-DEP RF protocol. In still another aspect, communicationsdevice 310 may be operable to be connected to an access network and/orcore network (e.g., a CDMA network, a GPRS network, a UMTS network, andother types of wireline and wireless communication networks).

In an aspect, communications device 310 may include a NFC controller312, a NFC controller interface (NCI) 322, and device host 340. In anaspect, device host 340 may be operable to obtain, through NCI 322, andNFC Controller 312 information from remote NFC endpoint 330, throughremote NFC endpoint 330 NFC module 332.

In an aspect, during ISO-DEP communications NFC Controller 312 mayoperate using an ISO-DEP RF interface 316. When operating using theISO-DEP RF interface 316, NFC Controller 312 may be operable to changevarious parameters associated with data exchange between device host 340and remote NFC endpoint 330 using data exchange change module 318.

Device host 340 may include, among other modules, parameter selectionmodule 342 and parameter update module 344. In an operational aspect,when using a frame RF interface 314, NFC Controller 312 may act as arelay and merely communicate messages between communications device 310device host 340 and remote NFC endpoint 330. In such an aspect, NFCcontroller 312 may not interpret the content of messages relayed betweencommunications device 310 device host 340 and remote NFC endpoint 330.For example, when using frame RF interface 314 and NFC-B technology, theNFC Controller 312 operating either as a polling or as a listeningdevice cannot interpret activation messages (e.g. ATTRIB command orATTRIB response), and thus cannot update data exchange parametersincluded within the activation messages. In such an aspect, device host340 may extract data exchange parameters from the activation messages,whether received from remote NFC endpoint 330 or created by DH 340. Inan aspect, the data exchange parameters may include any combination ofMinimum guard time (TR0), Minimum synchronization time (TR1),Minimum_frame delay time (TR2 ), Suppress start of sequence (SoS), andSuppress end of sequence (EoS). Parameter update module 344 maycommunicate some or all of the data exchange values obtained byparameter selection module 342 to NFC Controller 312. Further,communications from parameter update module 344 may prompt NFCcontroller 312 to change various data exchange configuration parameters.In other words, as NFC Controller 312 may not detect the content of theactivation messages, device host 340 may communicate the necessary dataexchange parameters using parameter update module 344. Parameter updatemodule 344 may use messaging as defined in Tables 1, 2, 3 and 4.

TABLE 1 Control Message for Parameter Update RequestRF_PARAMETER_UPDATE_CMD Payload Field(s) Length Value/Description Numberof 1 Octet The number of RF Communication Parameters Parameter fields tofollow (n). RF x + 2 ID 1 Byte The identifier of the RF CommunicationOctets Communication Parameter Parameter as [1 . . . n] defined in Table3. Length 1 Byte The length of Value (x). Value x Bytes Value of the RFCommunication Parameter.

TABLE 2 Control Message for Parameter Update ResponseRF_PARAMETER_UPDATE_RSP Payload Field(s) Length Value/Description Status1 Octet See Table 89 Number of 1 Octet The number of RF CommunicationParameters Parameter ID fields to follow (n). Value SHALL be 0 and noParameter IDs listed unless Status = STATUS_INVALID_PARAM. RF 1 OctetThe identifier of the invalid RF Communication Communication Parameter.See Table 4 Parameter ID for a list of IDs. [0 . . . n]

TABLE 3 Type Length Value (TLV) Coding for RF Communication Parameter IDType Length Value 0x00 1 Octet RF Technology and Mode, coded as definedin Table 91. 0x01 1 Octet Transmit Bit Rate, coded as defined in Table92. 0x02 1 Octet Receive Bit Rate, coded as defined in Table 92. 0x03 1Octet NFC-B Data Exchange Configuration, coded as defined in Table 40x04-0x7F Reserved for future use 0x80-0xFF Proprietary

TABLE 4 NFC-B Data Exchange Configuration Parameter Bit Mask b7 b6 b5 b4b3 b2 b1 b0 Description Octet 0 X X Minimum TR0 as defined in [DIGITAL]X X Minimum TR1 as defined in [DIGITAL] X Suppression of EoS as definedin [DIGITAL] X Suppression of SoS as defined in [DIGITAL] X X MinimumTR2 as defined in [DIGITAL]

The references within Tables 2 and 3 (e.g., Table 89,Table 91,Table 92)are made in the context of the NFC Forum NCI specification.Additionally, the references within Table 4 ([DIGITAL]) are made in thecontext of the NFC Forum DIGITAL Specification. Table 4 is not presentin the NFC Forum NCI specification. As used herein, with reference toTables 1-4,there may be situations in which the DH 340 may attempt tocommunicate updates of certain data exchange parameters in the NFCController 312. During such situations, the DH 340 sends a parameterupdate command (e.g., RF_PARAMETER_UPDATE_CMD) to NFC Controller 312.Table 1 provides an example parameter update command.

Continuing the above described operational aspect, with reference toTables 2-4, when NFC Controller 312 receives the update command (e.g.,RF_PARAMETER_UPDATE_CMD), the NFC Controller 312 responds with an updateresponse (e.g., RF_PARAMETER_UPDATE_RSP). Table 2 provides an exampleparameter update response. In Table 2,the “Status” field indicateswhether the setting of these RF Communication parameters was successfulor not. For example, a “Status” of STATUS_OK SHALL indicates that all RFCommunication parameters have been set within the NFC Controller 312 tovalues included in the parameter update command. By contrast, if the DH340 tries to set a parameter which is not applicable for the NFCController 312, the NFC Controller 312 responds with a parameter updateresponse (e.g., RF_PARAMETER_UPDATE_RSP) with a “Status” field of“invalid” (e.g., STATUS_INVALID_PARAM) and the response may include oneor more invalid RF Communication parameter IDs. In an aspect, where someparameters are invalid, the remaining valid parameters are still used bythe NFC Controller 312. Once NFC Controller 312 has communicated theparameter update response (e.g., RF_PARAMETER_UPDATE_RSP), the NFCController 312 uses the values of successfully updated data exchangeparameter values at the appropriate time. For a polling device, theupdated data exchange parameter values may be used upon receipt. For alistening device, the updated data exchange parameter values may be usedonce the next RF Frame has been sent (e.g., as defined in the presentNCI specification).

Referring to Table 3,the “NFC-B Data Exchange Configuration” parameterspecifies a number of NFC-B related values to be used by the NFCC duringsubsequent data exchange. This parameter includes values for MinimumTR0, Minimum TR1, Minimum TR2, Suppression of SoS, and Suppression ofEoS. The format of the octet is defined in Table 4.In operation, not allvalues within “NFC-B Data Exchange Configuration” parameter may berelevant in a given mode of operation. In such an aspect, the NFCController may only update those values that are relevant to the givenmode of operation.

As such, communication network 300 provides an environment to allowupdating of data exchange parameters in a NFC controller 312 for ISO-DEPcommunication between a DH 340 and a remote NFC endpoint 330 when theNFC controller 312 is using a frame RF interface and NFC-B technology.

FIGS. 4-6 illustrate various methodologies in accordance with variousaspects of the presented subject matter. While, for purposes ofsimplicity of explanation, the methodologies are shown and described asa series of acts or sequence steps, it is to be understood andappreciated that the claimed subject matter is not limited by the orderof acts, as some acts may occur in different orders and/or concurrentlywith other acts from that shown and described herein. For example, thoseskilled in the art will understand and appreciate that a methodologycould alternatively be represented as a series of interrelated states orevents, such as in a state diagram. Moreover, not all illustrated actsmay be required to implement a methodology in accordance with theclaimed subject matter. Additionally, it should be further appreciatedthat the methodologies disclosed hereinafter and throughout thisspecification are capable of being stored on an article of manufactureto facilitate transporting and transferring such methodologies tocomputers. The term article of manufacture, as used herein, is intendedto encompass a computer program accessible from any computer-readabledevice, carrier, or media.

With reference now to FIG. 4, an example flowchart describing a process400 for updating data exchange configuration parameters for ISO-DEPcommunication between a DH and a remote NFC endpoint is illustrated.

In an optional aspect, at block 402, a data exchange process may beenabled using an ISO-DEP RF protocol with a frame RF interface. In anaspect, NFC-B technology is used by the NFCC in receiving and/or sendingdata associated with the enabled process.

At block 404, the DH may exchange activation messages with a remote NFCendpoint. In an aspect, the activation messages are an ATTRIB commandand an ATTRIB response, and include one or more parameters associatedwith data exchange configuration. At block 406, DH may compare relevantdata exchange parameters currently used by the NFCC with data exchangeparameters provided in the received activation command.

If at block 406 the DH determines that none of the relevant parametersare different, in an optional aspect, at block 408 DH may initiatecommunications with the remote NFC endpoint using the enabled ISO-DEPprotocol. By contrast, if at block 406 the DH determines that one ormore of the relevant data exchange parameters are different, then atblock 410 the DH generates and transmits a parameter update message tothe NFCC to prompt to the NFCC to update the currently used dataexchange parameters to those included in the parameter update message.This update may be performed upon receipt of the update message, or itmay be delayed to a time following the transmission of the next RFFrame. In an aspect, the parameter update messages may be formattedusing fields described in Tables 1-4.Specifically, the update may beimmediate for a polling device, and delayed for a listening device. Asnoted in Tables 1-4,a reference to a NFC-B data exchange configurationtable may be included in the RF parameter update command.

In an optional aspect, at block 412, the DH may receive a RF parameterresponse (e.g., RF_PARAMETER_UPDATE_RSP) indicating successful receiptand/or implementation of data exchange parameters included in the RFparameter update command. Once the NFCC has updated the one or moreparameters, the process may continue to optional block 408 to allow theDH to initiate communications with the remote NFC endpoint using theenabled ISO-DEP protocol.

With reference now to FIG. 5, an example listen side call flow diagramdescribing a system for updating parameters for ISO-DEP communicationbetween a DH and a remote NFC endpoint using a NFCC is illustrated. Asdepicted in FIG. 5 a NFC environment 500 may include a device host 502,a NFCC 504 and a remote NFC endpoint 506. Device host 502 may beimplemented in Poll Mode or Listening Mode. As used herein, a pollingdevice is the one that has sent the initial command to which thelistening device replied with a response. Subsequently, both deviceswill “transmit” and “receive” in turn. In other words, the pollingdevice performs the role of a reader/writer, and the listening deviceperforms the role of a card emulator.

At act 508, the DH 502 may initiate communications to use a frame RFinterface for ISO-DEP RF protocol communications. At act, 510 senserequest and response communications may be sent between NFCC 504 andremote NFC endpoint 506. In an aspect, where NFC-B technology is used,the sense request may be a SENSB_REQ and the sense response may be aSENSB_RES. At act 512, an activation command (e.g., ATTRIB command) istransmitted from remote NFC endpoint 506 to NFCC 504. As communicationshave been set up using a frame RF interface, the message may be receivedas a RF Frame (ATTRIB command) message. At act 514 the NFCC 504 mayrecognize the message as a valid activation command indicating anISO-DEP protocol. At act 516, NFCC 504 may determine the RF interface inused for ISO-DEP protocol communications is “Frame.” In response toreceiving a communication from remote NFC endpoint, at act 518, NFCC 504may transmit a RF interface activation notification (e.g.,RF_INTF_ACTIVATED_NTF) message to DH 502. In an aspect, the notificationmay indicate the protocol as ISO-DEP and the interface as “Frame.”Further, in response to detecting the ISO_(—DEP) protocol is “Frame”, atact 520 NFCC 504 transmits the activation command to DH 502.

At act 522, DH 502 may parse the activation command and extract dataexchange parameters that are applicable to NFCC 504, and may generate anupdate message including the relevant extracted data exchangeparameters. In an aspect, the data exchange parameters include some orall of Minimum TR0, Minimum TR1, Minimum TR2, Suppression of SoS, andSuppression of EoS. At act 524, DH 502 may transmit the update messageto NFCC 504. In an aspect, the update message is anRF_PARAMETER_UPDATE_CMD and includes the relevant extracted dataexchange parameters. Additionally, the determined data exchangeparameters may be selected to align with one or more parameterscommunicated as part of an ISO-DEP RF protocol update process.

Act 526, NFCC 504 may store the received data exchange parameters, andat act 526, a RF parameter update response (e.g.,RF_PARAMETER_UPDATE_RSP) may be transmitted by NFCC 504 to DH 502. Atact 528, DH 502 transmits a response to the activation command, and atblock 530, the response is relayed to remote NFC endpoint 506. At act532, NFCC 504 may update data exchange parameters and the updated NFC-Bdata exchange parameters may be used for subsequence exchanges ofISO-DEP blocks at the specified time.

As such, data exchange parameters associated with NFCC 504 are updatedin accordance with the activation command received at act 512, and atact 534 NFCC 504 may receive an ISO-DEP block from remote NFC endpoint506 which may be relayed the block on to DH 502 at act 536. At act 538,the received ISO-DEP block may be processed using ISO-DEP listen sideprotocols, and at act 540 an ISO-DEP block may be transmitted to NFCC504 to be relayed on to remote NFC endpoint 506 at act 552.

With reference now to FIG. 6, an example polling side call flow diagramdescribing a system for updating parameters for ISO-DEP communicationbetween a DH and a remote NFC endpoint using a NFCC is illustrated. Asdepicted in FIG. 6 a NFC environment 600 may include a device host 602,a NFCC 604 and a remote NFC endpoint 606.

At act 608, the DH 602 may initiate communications to use a frame RFinterface for ISO-DEP RF protocol communications. At act, 610 senserequest and response communications may be sent between NFCC 604 andremote NFC endpoint 606. In an aspect, where NFC-B technology is used,the sense request may be a SENSB_REQ and the sense response may be aSENSB_RES. At act 612, NFCC 604 may transmit a RF interface activationnotification (e.g., RF_INTF_ACTIVATED_NTF) message to DH 602. In anaspect, the notification may indicate the protocol as ISO-DEP and theinterface as “Frame.” While acting in polling mode, DH 602 may generatean activation command (e.g., ATTRIB command) that may be transmitted toNFCC 604 at act 616. As NFCC 604 is using Frame RF interface, NFCC 604may act as a relay and communicate the activation command to remote NFCendpoint 606. Remote NFC endpoint 606 may receive the activationcommand, generate an activation response, and transmit the activationresponse (e.g., ATTRIB response) at act 618. At act 620, NFCC 604transmits the activation response to DH 602.

At act 622, DH 602 may parse the activation response and extract dataexchange parameters that are applicable to NFCC 604, and may generate anupdate message including the relevant extracted data exchangeparameters. In an aspect, the data exchange parameters include some orall of Minimum TR0, Minimum TR1, Minimum TR2, Suppression of SoS, andSuppression of EoS. At act 624, DH 602 may transmit the update messageto NFCC 604. In an aspect, the update message is anRF_PARAMETER_UPDATE_CMD and includes the relevant extracted or selecteddata exchange parameters. Additionally, the determined data exchangeparameters may be selected to align with one or more parameterscommunicated as part of an ISO-DEP RF protocol update process.

At act 626, NFCC 604 updates the poll side parameter values with thevalues included in the command for use during data exchange. At act 628,a RF parameter update response (e.g., RF_PARAMETER_UPDATE_RSP) may betransmitted by NFCC 604 to DH 602 indicating the values have beenupdated.

As such, data exchange parameters associated with NFCC 604 are updatedin accordance with the activation response received at act 620, and atact 630, DH 602 may generate an ISO-DEP block as part of ISO-DEPcommunication with remote NFC endpoint 606. At act 632, the data blockis communicated to NFCC 604 which relayed the data to remote NFCendpoint 606 at act 634. At act 636, remote NFC endpoint 606 respondswith an ISO-DEP block transmission to NFCC 604, and at act 638 theresponse may be relayed to DH 602.

While referencing FIG. 3, but turning also now to FIG. 7, an examplearchitecture of communications device 700 is illustrated. As depicted inFIG. 7, communications device 700 includes receiver 702 that receives asignal from, for instance, a receive antenna (not shown), performstypical actions on (e.g., filters, amplifies, downconverts, etc.) thereceived signal, and digitizes the conditioned signal to obtain samples.Receiver 702 can comprise a demodulator 704 that can demodulate receivedsymbols and provide them to processor 706 for channel estimation.Processor 706 can be a processor dedicated to analyzing informationreceived by receiver 702 and/or generating information for transmissionby transmitter 720, a processor that controls one or more components ofcommunications device 700, and/or a processor that both analyzesinformation received by receiver 702, generates information fortransmission by transmitter 720, and controls one or more components ofcommunications device 700. Further, signals may be prepared fortransmission by transmitter 720 through modulator 718 which may modulatethe signals processed by processor 706.

Communications device 700 can additionally comprise memory 708 that isoperatively coupled to processor 706 and that can store data to betransmitted, received data, information related to available channels,TCP flows, data associated with analyzed signal and/or interferencestrength, information related to an assigned channel, power, rate, orthe like, and any other suitable information for estimating a channeland communicating via the channel.

Further, processor 706, receiver 702, transmitter 720, NFCC 730, and/orDH 760 can provide means for receiving an activation message from a NFCC730 that is using a Frame RF interface over NFC-B RF technology, meansfor determining that one or more data exchange parameters included inthe activation message are different from one or more correspondingcurrent relevant data exchange parameters that the NFCC 730 isconfigured to implement, means for generating an RF parameter updatecommand including the one or more data exchange parameters correspondingto the one or more current relevant data exchange parameters that aredetermined to be different, and means for send the generated RFparameter update command to the NFCC 730 to prompt the NFCC 730 toupdate the one or more corresponding current relevant data exchangeparameters.

It will be appreciated that data store (e.g., memory 708) describedherein can be either volatile memory or nonvolatile memory, or caninclude both volatile and nonvolatile memory. By way of illustration,and not limitation, nonvolatile memory can include read only memory(ROM), programmable ROM (PROM), electrically programmable ROM (EPROM),electrically erasable PROM (EEPROM), or flash memory. Volatile memorycan include random access memory (RAM), which acts as external cachememory. By way of illustration and not limitation, RAM is available inmany forms such as synchronous RAM (SRAM), dynamic RAM (DRAM),synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhancedSDRAM (ESDRAM), Synchlink DRAM (SLDRAM), and direct Rambus RAM (DRRAM).Memory 708 of the subject systems and methods may comprise, withoutbeing limited to, these and any other suitable types of memory.

In another aspect, communications device 700 may include NCI 750. In anaspect, NCI 750 may be operable to enable communications between a DH760 and NFC controller 730.

Communications device 700 may include a NFC controller 730. In anaspect, NFC Controller 730 may be operable to obtain, through NCI 750,information from other devices, such as remote NFC endpoint 330. DuringISO-DEP communication NFC Controller 730 may operate using a frame RFinterface 314 or an ISO-DEP interface 734. When operating using theISO-DEP interface 734, NFC Controller 730 may be operable to changevarious parameters associated with communications between device host760 and remote NFC endpoint 330 using data exchange change module 736.

Device host 760 may include, among other modules, parameter selectionmodule 762 and parameter update module 764. In an operational aspect,when using a frame RF interface 732, NFC Controller 730 may act as arelay and merely communicate messages between device host 760 and aremote NFC endpoint. In such an aspect, NFC controller 730 may notinterpret the content of messages relayed between device host 760 andthe remote NFC endpoint. For example, when using frame RF interface 732and NFC-B technology, the NFC Controller 730 cannot interpret activationmessages (e.g. ATTRIB command or ATTRIB response), and thus cannotupdate data exchange parameters included within the activation messages.In such an aspect, device host 760 may extract data exchange parametersfrom the activation messages exchanged with the remote NFC endpoint. Inan aspect, the data exchange parameters may include any combination ofMinimum guard time (TR0), Minimum synchronization time (TR1), Minimumframe delay time (TR2), Suppress start of sequence (SoS), and Suppressend of sequence (EoS). Parameter update module 764 may communicate therelevant data exchange parameters obtained by parameter selection module762 to NFC Controller 730. Further, communications from parameter updatemodule 764 may prompt NFC controller 730 to change various data exchangeconfiguration parameters. In other words, as NFC Controller 730 may notdetect the content of the activation command, device host 760 maycommunicate the necessary data exchange parameters to NFC Controller 730using parameter update module 764. As noted above, parameter updatemodule 764 may use messaging as defined in Tables 1, 2, 3 and 4.Again asnoted above, the parameter update module 764 may update once it hasreceived the parameter update command, or it may hold the values (e.g.store in memory 708) for updating after the next RF Frame has been sent(e.g., as noted in the current NCI specification).

Additionally, communications device 700 may include user interface 740.User interface 740 may include input mechanisms 742 for generatinginputs into communications device 700, and output mechanism 744 forgenerating information for consumption by the user of the communicationsdevice 700. For example, input mechanisms 742 may include a mechanismsuch as a key or keyboard, a mouse, a touch-screen display, amicrophone, etc. Further, for example, output mechanism 744 may includea display, an audio speaker, a haptic feedback mechanism, a PersonalArea Network (PAN) transceiver etc. In the illustrated aspects, theoutput mechanism 744 may include a display operable to present mediacontent that is in image or video format or an audio speaker to presentmedia content that is in an audio format.

FIG. 8 an apparatus 800 that improves mechanisms for prompting a NFCC toupdate data exchange parameters for ISO-DEP communications between a DHand a remote NFC endpoint can reside at least partially within a DH. Itis to be appreciated that apparatus 800 is represented as includingfunctional blocks, which can represent functions implemented by aprocessor, software, or combination thereof (e.g., firmware).

As such, apparatus 800 includes a logical grouping 802 of electricalcomponents that can act in conjunction. For instance, logical grouping802 can include means for receiving an activation message from a NFCCthat is using a Frame RF interface over NFC-B RF technology (Block 804).For example, in an aspect, the means 804 can include DH 760 ofcommunications device 700 and/or processor 706 of communications device700. In an aspect, the activation message may be an ATTRIB command orATTRIB response. In another aspect, the means for receiving 804 may befurther configured to receive a RF parameter update response from theNFCC indicating the one or more data exchange parameters have beensuccessfully updated. In such an aspect, the RF parameter updateresponse may be an RF_PARAMETER_UPDATE_RSP message.

Further, logical grouping 802 can include means for determining that oneor more data exchange parameters included in the activation message aredifferent from one or more corresponding current relevant data exchangeparameters that the NFCC is configured to implement (Block 806). Forexample, in an aspect, the means for determining 806 can include DH 760of communications device 700 and/or processor 706 of communicationsdevice 700. In an aspect, the one or more data exchange parameters mayinclude Minimum TR0, Minimum TR1, Minimum TR2, Suppress SoS, EoS, etc.In another aspect, the one or more data exchange parameters may bedetermined to align with one or more parameters communicated as part ofan ISO-DEP RF protocol update process.

In an optional aspect, logical grouping 802 can include means forgenerating an RF parameter update command including the one or more dataexchange parameters corresponding to the one or more current relevantdata exchange parameters that are determined to be different (Block808). For example, in an aspect, the means for generating 808 caninclude DH 760 of communications device 700 and/or processor 706 ofcommunications device 700. In an aspect, the means for generating 808may be configured to include a reference to a NFC-B data exchangeconfiguration table in the RF parameter update command that includes abit mask indicating the one or more data exchange parameters.

In another optional aspect, logical grouping 802 can include means forsending the generated RF parameter update command to the NFCC to promptthe NFCC to update the one or more corresponding current relevant dataexchange parameters with the one or more data exchange parametersincluded in the RF parameter update command (Block 810). For example, inan aspect, the means for sending 810 can include DH 760 ofcommunications device 700 and/or processor 706 of communications device700. In such an aspect, where the NFCC is in a polling mode, theactivation message may be an activation response, and the NFCC mayupdate the one or more data exchange parameters prior to transmission ofthe RF parameter update response to the DH. In another aspect, where theNFCC is in a listening mode, the activation message may be an activationcommand. In such an aspect, the NFCC may store the one or more dataexchange parameters prior to transmission of the RF parameter updateresponse to the DH, and the means for sending may be further configuredto send an activation response to the NFCC, and the NFCC may update theone or more data exchange parameters after sending the activationresponse message to a remote NFC endpoint. In an aspect, the RFparameter update response may include an RF_PARAMETER_UPDATE_RSPmessage.

Additionally, apparatus 800 can include a memory 812 that retainsinstructions for executing functions associated with electricalcomponents 804, 806, 808, and 810. While shown as being external tomemory 812, it is to be understood that one or more of electricalcomponents 804, 806, 808, and 810 can exist within memory 812. In anaspect, for example, memory 812 may be the same as or similar to memory708 (FIG. 7). In another aspect, memory 812 may be associated with DH760 and/or NFCC 730.

As used in this application, the terms “component,” “module,” “system”and the like are intended to include a computer-related entity, such asbut not limited to hardware, firmware, a combination of hardware andsoftware, software, or software in execution. For example, a componentmay be, but is not limited to being, a process running on a processor, aprocessor, an object, an executable, a thread of execution, a program,and/or a computer. By way of illustration, both an application runningon a computing device and the computing device can be a component. Oneor more components can reside within a process and/or thread ofexecution and a component may be localized on one computer and/ordistributed between two or more computers. In addition, these componentscan execute from various computer readable media having various datastructures stored thereon. The components may communicate by way oflocal and/or remote processes such as in accordance with a signal havingone or more data packets, such as data from one component interactingwith another component in a local system, distributed system, and/oracross a network such as the Internet with other systems by way of thesignal.

Furthermore, various aspects are described herein in connection with aterminal, which can be a wired terminal or a wireless terminal. Aterminal can also be called a system, device, subscriber unit,subscriber station, mobile station, mobile, mobile device, remotestation, mobile equipment (ME), remote terminal, access terminal, userterminal, terminal, communication device, user agent, user device, oruser equipment (UE). A wireless terminal may be a cellular telephone, asatellite phone, a cordless telephone, a Session Initiation Protocol(SIP) phone, a wireless local loop (WLL) station, a personal digitalassistant (PDA), a handheld device having wireless connectioncapability, a computing device, or other processing devices connected toa wireless modem. Moreover, various aspects are described herein inconnection with a base station. A base station may be utilized forcommunicating with wireless terminal(s) and may also be referred to asan access point, a Node B, or some other terminology.

Moreover, the term “or” is intended to mean an inclusive “or” ratherthan an exclusive “or.” That is, unless specified otherwise, or clearfrom the context, the phrase “X employs A or B” is intended to mean anyof the natural inclusive permutations. That is, the phrase “X employs Aor B” is satisfied by any of the following instances: X employs A; Xemploys B; or X employs both A and B. In addition, the articles “a” and“an” as used in this application and the appended claims shouldgenerally be construed to mean “one or more” unless specified otherwiseor clear from the context to be directed to a singular form.

The techniques described herein may be used for various wirelesscommunication systems such as CDMA, TDMA, FDMA, OFDMA, SC-FDMA and othersystems. The terms “system” and “network” are often usedinterchangeably. A CDMA system may implement a radio technology such asUniversal Terrestrial Radio Access (UTRA), cdma2000,etc. UTRA includesWideband-CDMA (W-CDMA) and other variants of CDMA. Further, cdma2000covers IS-2000,IS-95 and IS-856 standards. A TDMA system may implement aradio technology such as Global System for Mobile Communications (GSM).An OFDMA system may implement a radio technology such as Evolved UTRA(E-UTRA), Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi), IEEE 802.16(WiMAX), IEEE 802.20,Flash-OFDMA, etc. UTRA and E-UTRA are part ofUniversal Mobile Telecommunication System (UMTS). 3GPP Long TermEvolution (LTE) is a release of UMTS that uses E-UTRA, which employsOFDMA on the downlink and SC-FDMA on the uplink. UTRA, E-UTRA, UMTS, LTEand GSM are described in documents from an organization named “3rdGeneration Partnership Project” (3GPP). Additionally, cdma2000 and UMBare described in documents from an organization named “3rd GenerationPartnership Project 2” (3GPP2). Further, such wireless communicationsystems may additionally include peer-to-peer (e.g., mobile-to-mobile)ad hoc network systems often using unpaired unlicensed spectrums, 802.xxwireless LAN, BLUETOOTH, near-field communications (NFC-A, NFC-B, NFC-F,etc.), and any other short- or long-range, wireless communicationtechniques.

Various aspects or features will be presented in terms of systems thatmay include a number of devices, components, modules, and the like. Itis to be understood and appreciated that the various systems may includeadditional devices, components, modules, etc. and/or may not include allof the devices, components, modules etc. discussed in connection withthe figures. A combination of these approaches may also be used.

The various illustrative logics, logical blocks, modules, and circuitsdescribed in connection with the aspects disclosed herein may beimplemented or performed with a general purpose processor, a digitalsignal processor (DSP), an application specific integrated circuit(ASIC), a field programmable gate array (FPGA) or other programmablelogic device, discrete gate or transistor logic, discrete hardwarecomponents, or any combination thereof designed to perform the functionsdescribed herein. A general-purpose processor may be a microprocessor,but, in the alternative, the processor may be any conventionalprocessor, controller, microcontroller, or state machine. A processormay also be implemented as a combination of computing devices, e.g., acombination of a DSP and a microprocessor, a plurality ofmicroprocessors, one or more microprocessors in conjunction with a DSPcore, or any other such configuration. Additionally, at least oneprocessor may comprise one or more modules operable to perform one ormore of the steps and/or actions described above.

Further, the steps and/or actions of a method or algorithm described inconnection with the aspects disclosed herein may be embodied directly inhardware, in a software module executed by a processor, or in acombination of the two. A software module may reside in RAM memory,flash memory, ROM memory, EPROM memory, EEPROM memory, registers, a harddisk, a removable disk, a CD-ROM, or any other form of storage mediumknown in the art. An example storage medium may be coupled to theprocessor, such that the processor can read information from, and writeinformation to, the storage medium. In the alternative, the storagemedium may be integral to the processor. Further, in some aspects, theprocessor and the storage medium may reside in an ASIC. Additionally,the ASIC may reside in a user terminal In the alternative, the processorand the storage medium may reside as discrete components in a userterminal Additionally, in some aspects, the steps and/or actions of amethod or algorithm may reside as one or any combination or set of codesand/or instructions on a machine readable medium and/or computerreadable medium, which may be incorporated into a computer programproduct.

In one or more aspects, the functions described may be implemented inhardware, software, firmware, or any combination thereof. If implementedin software, the functions may be stored or transmitted as one or moreinstructions or code on a computer-readable medium. Computer-readablemedia includes both computer storage media and communication mediaincluding any medium that facilitates transfer of a computer programfrom one place to another. A storage medium may be any available mediathat can be accessed by a computer. By way of example, and notlimitation, such computer-readable media can comprise RAM, ROM, EEPROM,CD-ROM or other optical disk storage, magnetic disk storage or othermagnetic storage devices, or any other medium that can be used to carryor store desired program code in the form of instructions or datastructures and that can be accessed by a computer. Also, any connectionmay be termed a computer-readable medium. For example, if software istransmitted from a website, server, or other remote source using acoaxial cable, fiber optic cable, twisted pair, digital subscriber line(DSL), or wireless technologies such as infrared, radio, and microwave,then the coaxial cable, fiber optic cable, twisted pair, DSL, orwireless technologies such as infrared, radio, and microwave areincluded in the definition of medium. Disk and disc, as used herein,includes compact disc (CD), laser disc, optical disc, digital versatiledisc (DVD), floppy disk and blu-ray disc where disks usually reproducedata magnetically, while discs usually reproduce data optically withlasers. Combinations of the above should also be included within thescope of computer-readable media.

While the foregoing disclosure discusses illustrative aspects and/oraspects, it should be noted that various changes and modifications couldbe made herein without departing from the scope of the described aspectsand/or aspects as defined by the appended claims. Furthermore, althoughelements of the described aspects and/or aspects may be described orclaimed in the singular, the plural is contemplated unless limitation tothe singular is explicitly stated. Additionally, all or a portion of anyaspect and/or aspect may be utilized with all or a portion of any otheraspect and/or aspect, unless stated otherwise.

What is claimed is:
 1. A method of communications, comprising:receiving, by a device host (DH), an activation message from a nearfield communication controller (NFCC) that is using a Frame radiofrequency (RF) interface over NFC-B RF technology; determining that oneor more data exchange parameters included in the activation message aredifferent from one or more corresponding current relevant data exchangeparameters that the NFCC is configured to implement; generating an RFparameter update command including the one or more data exchangeparameters corresponding to the one or more current relevant dataexchange parameters that are determined to be different; and sending thegenerated RF parameter update command to the NFCC to prompt the NFCC toupdate the one or more corresponding current relevant data exchangeparameters with the one or more data exchange parameters included in theRF parameter update command.
 2. The method of claim 1, wherein the oneor more data exchange parameters comprise at least one parameter of:Minimum guard time (TR0), Minimum synchronization time (TR1), Minimumframe delay time (TR2), Suppress start of sequence (SoS), or Suppressend of sequence (EoS).
 3. The method of claim 1, wherein the generatingfurther comprises: including a reference to a NFC-B data exchangeconfiguration table in the RF parameter update command that includes abit mask indicating the one or more data exchange parameters.
 4. Themethod of claim 1, further comprising: receiving a RF parameter updateresponse from the NFCC indicating the one or more data exchangeparameters have been successfully updated.
 5. The method of claim 4,wherein the NFCC is in a polling mode, wherein the activation message isan activation response, and wherein the NFCC updates the one or moredata exchange parameters prior to transmission of the RF parameterupdate response to the DH.
 6. The method of claim 4, wherein the NFCC isin a listening mode, wherein the activation message is an activationcommand, wherein the NFCC stores the one or more data exchangeparameters prior to transmission of the RF parameter update response tothe DH, wherein the method further comprises sending an activationresponse to the NFCC, and wherein the NFCC updates the one or more dataexchange parameters after sending the activation response message to aremote NFC endpoint.
 7. The method of claim 1, wherein the activationmessage comprises either an ATTRIB command or ATTRIB response.
 8. Themethod of claim 1, wherein the RF parameter update command comprises anRF_PARAMETER_UPDATE_CMD message.
 9. The method of claim 4, wherein theRF parameter update response comprises an RF_PARAMETER_UPDATE_RSPmessage.
 10. The method of claim 1, wherein the one or more dataexchange parameters are determined to align with one or more parameterscommunicated as part of an ISO-DEP RF protocol update process.
 11. Acomputer program product, comprising: a computer-readable mediumcomprising code for: receiving, by a device host (DH), an activationmessage from a near field communication controller (NFCC) that is usinga Frame radio frequency (RF) interface over NFC-B RF technology;determining that one or more data exchange parameters included in theactivation message are different from one or more corresponding currentrelevant data exchange parameters that the NFCC is configured toimplement; generating an RF parameter update command including the oneor more data exchange parameters corresponding to the one or morecurrent relevant data exchange parameters that are determined to bedifferent; and sending the generated RF parameter update command to theNFCC to prompt the NFCC to update the one or more corresponding currentrelevant data exchange parameters with the one or more data exchangeparameters included in the RF parameter update command.
 12. The computerprogram product of claim 11, wherein the one or more data exchangeparameters comprise at least one parameter of: Minimum guard time (TR0),Minimum synchronization time (TR1), Minimum frame delay time (TR2),Suppress SoS, or Suppress EoS.
 13. The computer program product of claim11, wherein the computer-readable medium further comprises code for:including a reference to a NFC-B data exchange configuration table inthe RF parameter update command that includes a bit mask indicating theone or more data exchange parameters.
 14. The computer program productof claim 11, wherein the computer-readable medium further comprises codefor: receiving a RF parameter update response from the NFCC indicatingthe one or more data exchange parameters have been successfully updated.15. The computer program product of claim 14, wherein the NFCC is in apolling mode, wherein the activation message is an activation response,and wherein the NFCC updates the one or more data exchange parametersprior to transmission of the RF parameter update response to the DH. 16.The computer program product of claim 14, wherein the NFCC is in alistening mode, wherein the activation message is an activation command,wherein the NFCC stores the one or more data exchange parameters priorto transmission of the RF parameter update response to the DH, whereinthe computer-readable medium further comprises code for sending anactivation response to the NFCC, and wherein the NFCC updates the one ormore data exchange parameters after sending the activation responsemessage to a remote NFC endpoint.
 17. The computer program product ofclaim 11, wherein the activation message comprises either an ATTRIBcommand or ATTRIB response.
 18. The computer program product of claim11, wherein the RF parameter update command comprises anRF_PARAMETER_UPDATE_CMD message.
 19. The computer program product ofclaim 14, wherein the RF parameter update response comprises anRF_PARAMETER_UPDATE_RSP message.
 20. The computer program product ofclaim 11, wherein the one or more data exchange parameters aredetermined to align with one or more parameters communicated as part ofan ISO-DEP RF protocol update process.
 21. An apparatus forcommunications, comprising: means for receiving, by a device host (DH),an activation message from a near field communication controller (NFCC)that is using a Frame radio frequency (RF) interface over NFC-B RFtechnology; means for determining that one or more data exchangeparameters included in the activation message are different from one ormore corresponding current relevant data exchange parameters that theNFCC is configured to implement; means for generating an RF parameterupdate command including the one or more data exchange parameterscorresponding to the one or more current relevant data exchangeparameters that are determined to be different; and means for sendingthe generated RF parameter update command to the NFCC to prompt the NFCCto update the one or more corresponding current relevant data exchangeparameters with the one or more data exchange parameters included in theRF parameter update command.
 22. The apparatus of claim 21, wherein theone or more data exchange parameters comprise at least one parameter of:Minimum guard time (TR0), Minimum synchronization time (TR1), Minimumframe delay time (TR2), Suppress SoS, or Suppress EoS.
 23. The apparatusof claim 21, wherein the means for generating is further configured to:include a reference to a NFC-B data exchange configuration table in theRF parameter update command that includes a bit mask indicating the oneor more data exchange parameters.
 24. The apparatus of claim 21, whereinthe means for receiving is further configured to receive a RF parameterupdate response from the NFCC indicating the one or more data exchangeparameters have been successfully updated.
 25. The apparatus of claim24, wherein the NFCC is in a polling mode, wherein the activationmessage in an activation response, and wherein the NFCC updates the oneor more data exchange parameters prior to transmission of the RFparameter update response to the DH.
 26. The apparatus of claim 24,wherein the NFCC is in a listening mode, wherein the activation messageis an activation command, wherein the NFCC stores the one or more dataexchange parameters prior to transmission of the RF parameter updateresponse to the DH, wherein the means for sending is further configuredto send an activation response to the NFCC, and wherein the NFCC updatesthe one or more data exchange parameters after sending the activationresponse message to a remote NFC endpoint.
 27. The apparatus of claim21, wherein the activation message comprises either an ATTRIB command orATTRIB response.
 28. The apparatus of claim 21, wherein the RF parameterupdate command comprises an RF_PARAMETER_UPDATE_CMD message.
 29. Theapparatus of claim 24, wherein the RF parameter update responsecomprises an RF_PARAMETER_UPDATE_RSP message.
 30. The apparatus of claim21, wherein the one or more data exchange parameters are determined toalign with one or more parameters communicated as part of an ISO-DEP RFprotocol update process.
 31. An apparatus for communications,comprising: a device host (DH) configured to: receive an activationmessage from a near field communication controller (NFCC) that is usinga Frame radio frequency (RF) interface over NFC-B RF technology;determine that one or more data exchange parameters included in theactivation message are different from one or more corresponding currentrelevant data exchange parameters that the NFCC is configured toimplement; generate an RF parameter update command including the one ormore data exchange parameters corresponding to the one or more currentrelevant data exchange parameters that are determined to be different;and send the generated RF parameter update command to the NFCC to promptthe NFCC to update the one or more corresponding current relevant dataexchange parameters with the one or more data exchange parametersincluded in the RF parameter update command.
 32. The apparatus of claim31, wherein the one or more data exchange parameters comprise at leastone parameter of: Minimum guard time (TR0), Minimum synchronization time(TR1), Minimum frame delay time (TR2), Suppress SoS, or Suppress EoS.33. The apparatus of claim 31, wherein the DH is further configured to:include a reference to a NFC-B data exchange configuration table in theRF parameter update command that includes a bit mask indicating the oneor more data exchange parameters.
 34. The apparatus of claim 31, whereinthe DH is further configured to: receive a RF parameter update responsefrom the NFCC indicating the one or more data exchange parameters havebeen successfully updated.
 35. The apparatus of claim 34, wherein theapparatus further comprises the NFCC, wherein the NFCC is in a pollingmode, wherein the activation message is an activation response, andwherein the NFCC is configured to update the one or more data exchangeparameters prior to transmission of the RF parameter update response tothe DH.
 36. The apparatus of claim 34, wherein the apparatus furthercomprises the NFCC, wherein the NFCC is in a listening mode, wherein theactivation message is an activation command, wherein the NFCC isconfigured to store the one or more data exchange parameters prior totransmission of the RF parameter update response to the DH, wherein theDH is further configured to send an activation response to the NFCC, andwherein the NFCC is configured to update the one or more data exchangeparameters after sending the activation response message to a remote NFCendpoint.
 37. The apparatus of claim 31, wherein the activation messagecomprises either an ATTRIB command or ATTRIB response.
 38. The apparatusof claim 31, wherein the RF parameter update command comprises anRF_PARAMETER_UPDATE_CMD message.
 39. The apparatus of claim 34, whereinthe RF parameter update response comprises an RF_PARAMETER_UPDATE_RSPmessage.
 40. The apparatus of claim 31, wherein the one or more dataexchange parameters are determined to align with one or more parameterscommunicated as part of an ISO-DEP RF protocol update process.